Place the lobster heads and claws (meat removed), into a large pot. Remove the shells from the shrimp and place into the pot with the lobster shells

Cut up your onion and celery and place into the pot along with the rest of your ingredients. Cover with at least 4 quarts of cold water and bring to a rapid boil. Reduce heat and simmer for 2 hours, or until reduced by half

Strain the solids and discard. Strain the liquids a couple times through cheese cloth to remove any grit or sand